Pool structure



Sept. 16, 1969 s. E. BARRERA POOL STRUCTURE 5 Sheets-Sheet 1 Filed March 28, 1966 INVENTOR i/amraee' 6 1522:6211

m BY 9 um, 9 (mm, w %'NEY$ Sept. 16, 1969 s. E. BARRERA 3,

v POOL STRUCTURE Filed March 28, 1966 s Sheets-Sheet 2 I NVENT OR J04 mraes 1554:4544

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ATTORNEYS P 9 I s. ETBARRERA 3,466,676

POOL STRUCTURE Filed March 28, 1966 5 Sheets-Sheet 4 INVENTOR Jrvzm roe: 54326? faunwca ATTORNEY 8 Sept. 16, 1969 s. E. BARR ERA 3,

POOL STRUCTURE Filed March 28, 1966 5 Sheets-Sheet 5 WMQW INVENTOR jumra'ee 554422524 1 masmimwwou w: ma.

ATTORNEYS United States Patent Int. Cl. E0411 3/16 U.S. Cl. 4I72 35 Claims ABSTRACT OF THE DISCLOSURE A pool structure including a peripheral wall having at least one substantially rectilinear wall section, base means for supporting the rectilinear wall section extending to both sides of the wall section, a liner for holding a body of water disposed within the wall, the liner having an upper peripheral edge secured on the wall and the base means having sufiicient weight whereby the combined effect of the force of the entire weight thereof and the force of the weight of the water in the pool acting on the portion of the base means disposed on the inner side of the wall section, is at least as great as the lateral force applied by the Water in the pool against the wall section.

This invention relates to a pool structure and more particularly to an above ground pool structure. This invention further contemplates an above ground pool structure which is substantially elongated in shape or oval shaped as commonly referred to in the art as compared to conventional above ground swimming pools which are substantially circular in shape.

Most above ground swimming pools in the prior art are essentially circular in shape. More recently, there have been developed various types of elongated or oval shaped above ground swimming pools which are provided with at least one vertical substantially rectilinear side wall section which has provided some design problems relative to the construction thereof.

In above ground swimming pools having a circular shape, the lateral pressure of the water in the swimming pool is directed equally, radially in all directions against the side wall of the pool. With such a force distribution, the circular configuration of the wall usually is suflicient to support the lateral pressure of the water without the use of any extensive side reinforcing means. However, in elongated or oval shaped swimming pools, generally characterized by at least one vertical, substantially rectilinear side wall section, the lateral pressure applied by the body of water in the pool against such side wall section is significant to the extent that substantial reinforcing means is required to counteract such lateral pressure.

Accordingly, it is the principal object of this invention to provide an improved pool structure.

Another object of this invention is to provide a novel above ground pool structure.

A further object of this invention is to provide a novel elongated or oval shaped above ground pool structure.

A still further object of this invention is to provide an elongated or oval shaped above ground swimming pool structure havingnovel reinforcing means for the side wall thereof.

Another object of this invention is to provide a novel above ground swimming pool structure having at least one vertical, substantially rectilinear wall section including novel means for reinforcing such wall section.

A further object of this invention is to provide a novel elongated or oval shaped swimming pool structure in which improved means are provided for supporting the side wall to counteract the lateral pressure applied by the body of water in the pool against the side wall.

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A still further object of this invention is to provide an improved elongated or oval shaped above ground swimming pool having novel reinforcing means for the side wall thereof, which can be adjusted to suitably support the side wall regardless of the ground conditions on which the pool structure is assembled.

Another object of this invention is to provide a novel elongated or oval shaped above ground pool structure which is readily adapted to be erected by relatively unskilled persons.

A further object of this invention is to provide a novel elongated or oval shaped above ground pool structure having relatively few component parts, and which can be erected with the use of a few ordinary hand tools.

A still further object of the present invention is to provide an elongated or oval shaped above ground pool structure having relatively few component parts which are relatively inexpensive to manufacture.

Other objects and advantages of the present invention will become more apparent to those persons skilled in the art, from the following description when taken in conjunction with the accompanying drawings, wherein:

FIGURE 1 is a top plan view of an embodiment of the invention, having a portion thereof broken away;

FIGURE 2 is an enlarged fragmentary view of the embodiment illustrated in FIGURE 1, shown in perspective with portions thereof broken away;

FIGURE 3 is an enlarged cross-sectional view taken along line 33 in FIGURE 2;

FIGURE 4 is an enlarged cross-sectional view taken along line 44 in FIGURE 3, having a portion thereof broken away;

FIGURE 5 is an enlarged cross-sectional view taken along line 5--5 in FIGURE 3;

FIGURE 6 is an enlarged cross-sectional View taken along line 6-6 in FIGURE 2;

FIGURE 7 is a cross-sectional view taken along line 77 in FIGURE 6;

FIGURE 8 is an enlarged cross-sectional view taken along line 88 in FIGURE 2;

FIGURE 9 is a cross-sectional view taken along line 99 in FIGURE 8;

FIGURE 10 is a view similar to FIGURE 3, wherein the components are illustrated in exploded relation;

FIGURE 11 is a fragmentary view of a second embodiment of the invention, shown in perspective; and

FIGURE 12 is an enlarged cross-sectional View taken along line 1212 in FIGURE 11.

Briefly described, the present invention relates to a pool structure generally comprising a peripheral wall having at least one substantially rectilinear wall section, base means for supporting the rectilinear wall section extend ing to both sides of the wall section, a liner for holding a body of water disposed within the wall wherein the liner has an upper peripheral edge secured on the wall and the base means has a sufilcient weight whereby the combined effect of the force of the weight thereof and the force of the weight of the water in the pool acting on the portion of the base means disposed on the inner side of the wall section, is at least as great as the pressure applied by the water in the pool against the wall section.

The invention further contemplates embedding the base means in the ground, whereby the outer end of the base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against the side wall section, the use of at least one upright member pivotally secured to the base means for pivotal movement in a plane intersecting the wall section and engageable therewith in buttressing relation, including means for adjusting the angular position of the upright member relative to the base means, and the use of additional reinforcing means disposed within the wall, including a first portion thereof mounted on the inwardly extending portion of the base means and a second porlion thereof disposed adjacent the inner side of the rectilinear wall section whereby the pressure applied by the water in the pool against the second portion of the reinforcing means at least partially is counteracted by the force of the weight of the water applied on the first portion thereof mounted on the base means.

Referring to FIGURES 1 through 10, there is illustrated an embodiment of the invention. FIGURE 1 is a top plan view of the embodiment which generally comprises a vertical wall assembly 26, having a substantially elongated or oval shaped configuration including a pair of opposed substantially rectilinear wall sections 21 and 22 and opposed curved end sections 23 and 24, a liner 25 having the peripheral portion thereof secured to the wall assembly 20 and opposed support base assemblies 26 and 27 which support and reinforce the side wall sections 21 and 22, and are substantially similar in construction.

The base assembly 27 includes a plurality of substantially rectangular shaped cross beam members 28, each having parallel upper and lower surfaces 29 and 30. The cross beam members preferably are embedded in the ground in spaced parallel relation so that the top surfaces 29 thereof are disposed at ground level. In addition, the

cross beam members are positioned so that they extend to both sides of the side wall section 22, to provide a seat therefor. The outer ends of the cross beam members are rigidly interconnected by means of a pair of aligned end plates 31 and 32, secured together by means of an L-shaped joining plate 33. The end plate 31 is similar to end plate 32, and includes a vertical portion 34 having the inner face thereof abutting the end surfaces of the cross beam members 28 and the outer face engaging the ground,

a lower horizontal portion 35 which engages the lower I surfaces 36 of the cross beam members, and an upper horizontal portion 36 which engages the upper surfaces 29 of the cross beam members. The end plate members 31 and 32 are secured to the cross beam members by suitable screws or bolts. In addition, the end plate members 31 and 32 interlock the cross beam members to form a rigid base structure by means of an upwardly extending flange 37 which is received in a plurality of aligned recesses 38 in the lower surfaces 30 of the cross beam members and a downwardly projecting flange 39 which is received in a plurality of aligned recesses in the upper surfaces 29 of the cross beam members. The end plate members 31 and 32 are rigidly secure-d together by means of the joining plate 33, with suitable screws or bolts. As

best illustrated in FIGURES 2 and 3, the cross beam members 28 and the end plate members 34 are embedded in the ground so that the outer face of the end plate members 31 and 32 engage the ground to provide resistance to the lateral pressure applied by the body of water in the liner 25 against the side wall section 22.

The side wall section 22 further is supported by means of a plurality of buttress members 40, each of which is mounted on a cross beam member 28, and which are all substantially similar in construction. Each buttress member 40 includes a pair of spaced, vertically disposed parallel walls 41 and 42 which have a triangular shape, a vertical inner end wall 43 which engages the continuous vertical wall member 44 of the wall assembly 20 and a curved outer end wall 45. The side walls 41 and 42 are provided with vertically spaced tubular connecting members 46, 47 and 48 which are disposed adjacent the front wall 43 of the buttress member, and each of which project outwardly relative to the side walls 41 and 42 of the buttress member.

Each buttress member 40 is pivotally connected to its associated cross beam member 29 so that it can be moved in a plane substantially including the cross beam member and intersecting the wall member 44. The pivotal connection of each of the buttress members relative to its associated cross beam member includes a pair of upstanding bracket members 49 and 56 having horizontally aligned openings 51 and 52 for receiving the outwardly projecting portions of the tubular member 46, as best illustrated in FIGURES 4 and 5. The bracket members 41 and 42 are rigidly secured to the cross beam member 28 by means of bolt members 53 and 54. The outer portions of the tubular member 46 rest on the bottom of the openings 51 and 52, to permit the buttress member to pivot in the plane including the cross beam member 28 and intersecting the wall member 44. The outer ends of the tubular member 46 also are adapted to receive lower tubular rail sections 55 and 56 which interconnect successive buttress members. The tubular member 46 and the lower rail sections 55 and 56 are locked together by means of a U-shaped, locking pin member 57. The locking pin member 57 includes a pair of leg sections 58 and 59 which extend through aligned openings in the tubular member 46 and the lower rail sections 55 and 56, and an interconnecting portion 69 which engages the outer wall 43 of the buttress member, having an inwardly curved portion 61 which is received within a vertical slot 62 in the inner end wall 43 of the buttress member. The pin member 57 is rigidly secured to the tubular member 46 by means of a suitable screw 63.

The tubular member 47 is adapted to receive the ends of intermediate tubular rail sections 64 and 65 which interconnect successive buttress members similar to lower rail sections 55 and 56. The intermediate rail sections 64 and 65 are rigidly secured to the tubular member 47 by means of a U-shaped locking pin member 66 which is similar in construction and fastening to the locking pin member 57. The pin member 66 includes a pair of leg portions which are received through aligned openings in tubular member 47 and intermediate rail sections 64 and 65, as best illustrated in FIGURE 4. Upper rail sections 67 and 68, which interconnect successive buttress members, are secured to the tubular member 48 in the same manner that intermediate rail sections 64 and 65 are secured to tubular member 47.

The angular position of the buttress member 40 can be adjusted relative to the cross beam member 28 by means of a jack screw assembly 69 operatively interconnecting the outer lower end of the buttress member and the cross beam member. The assembly 69 is best illustrated in FIG- URES 6 and 7 and includes a strap member 70 pivotally secured to the cross beam member 28. The strap includes a pair of leg portions 71 and 72 which are pivotally con nected to a bolt 73 mounted in the cross beam member, and a connecting portion 74 having an upwardly projecting centering pin 75. The inner surface of the curved rear wall 45 of the buttress member is provided with a curved bracing liner 76 having a bushing 77 mounted in the lower end thereof. The bushing 77 is provided with a threaded opening 78 for receiving the threaded shank portion 79 of an adjusting bolt 80. The bolt also includes a head portion 81 having the lower surface thereof resting on the interconnecting portion 74 of the strap 70, and an axial recess 82 for receiving the centering pin 75. The angular position of the buttress member 40 relative to the cross beam member 28 is adjusted merely by turning the adjusting bolt 80 to cause the threaded shank portion 79 of the bolt member to be threaded into and out of the bushing member 77. This can be performed by a simple open ended wrench applied to the head portion 81 of the adjusting bolt. This adjustment will cause the buttress member 40 to pivot about the axis of the tubular member 46 to adjust the restraining force to be applied against the wall member 44.

The angular position of each buttress member 40 relative to its associated cross beam member can be adjusted independently of other buttress members, so that the restraining force along the side wall section 22 can be varied. This permits any single buttress member to be adjusted independently of other buttress members, to compensate for any excessive concentration of pressure at any point along the length of the wall section 22, or yielding ground conditions along the length of the base assembly 27. However, to compensate for yielding ground conditions beneath the base assembly 27, several successive buttress members normally would have to be adjusted, due to the interconnection of the ends of the cross beam members 28 by the end plate members 31 and 32.

The wall member 44 is supported along the side Wall sections 21 and 22 on the base assemblies 26 and 27 in the manner as described. Lateral pressure applied by the body of Water in the pool against the wall member 44 along side wall section 22 further is counteracted by means of a reinforcing apron member 83, as best illustrated in FIGURES 3 and 10. The reinforcing apron member 83 consists of a vertical section 84 and a horizontal section 85. As best illustrated in FIGURE 3, the vertical section 84 is disposed adjacent the portion of the wall member 44 extending across the side wall section 22 and is provided with a horizontal flange portion 86 which is seated and rigidly secured to the upper surfaces 29 of the cross beam members 28. The horizontal section 85 also rests on the upper surfaces 29 of the cross beam members 28, and is rigidly secured thereon, having the inner end thereof extending in overlying relation on the -tflange portion 86 of vertical section 84. The opposite end of the horizontal section 85 is provided with a downwardly projecting flange portion 87 which engages and is secured to the inner ends of the cross beam members.

The vertical section 84 is rigidly secured to the horizontal section 85 and the inner ends of the cross beam members 28, so that the lateral pressure applied by the body of water in the pool against the vertical section 84 of the apron will be at least partially counteracted by the force of the weight of the water acting on the horizontal section 85 thereof. As shown in the drawings, the apron member 83 is substantially L-shaped and either can consist of one section extending the entire length of the side wall section 22 or can consist of a plurality of joined L- shaped sections.

The portions of the wall member 44 extending along curved end sections 23 and 24 may be supported by suitable upright members 88 mounted on suitable foot plate members 89. The upright members 88 are interconnected and connected with buttress members 40 by means of lower, intermediate and upper rail sections 90, 91 and 92, as best illustrated in FIGURE 2. The rail members 90, 91 and 92 are connected to the upright members 88 and the buttress members 44 essentially in the same manner in which the intermediate rail sections 64 and 65 are connected to buttress members 40, as previously described.

The liner 25 holding the body of water within the pool, is supported on the wall assembly 20 by means of the peripheral edge thereof being folded over the upper edge of the wall member 44. The peripheral portion of the liner is held folded over the upper edge of the wall member 44 by means of an elongated clip member 93. The peripheral edge of the liner further is retained in folded over relation along the upper edge of the wall member 44 by means of an upper rail assembly 94, as best illustrated in FIGURES 8, 9 and 10. The upper rail assembly includes a plurality of interconnecting seating channels 95 which interconnect adjacent buttress members 40, adjacent upright members 88 or adjacent buttress members 40 and upright members 88, a plurality of reinforcing channels 96 resting on seating channels 95 and a plurality of outer channels 97. Each of the seating channels 95 are provided with openings in the ends thereof for receiving upwardly projecting lugs 98 formed on plate members 99 mounted on the upper ends of the buttress members 40 and upright members 88. The inner side of each seating channel member 95 is provided with a downwardly extending flange portion 100, which engages the elongated clip member 93 to assist in retaining the peripheral edge of the liner in folded over relation relative to the upper edge of the wall member 44. The members 96 and 97 also are substantially channel shaped and are provided with suitable openings for receiving the upwardly projecting lugs 98 so that they may be mounted in overlapping relation relative to each other to form the upper rail assembly as illustrated in FIGURE 8. The ends of the outer channel members 97 are secured together and to the other members 95 and 96 by means of clamping members 101 and 102. The clamping members 101 and 102 are rigidly secured to the upper ends of the buttress members 40 and the upright members 88 by means of suitable screws 103.

In the aforementioned embodiment it will be appreciated that the lateral pressure applied by the body of water held in the liner 25 against the side Wall section 22 is counteracted or resisted by three different features of the invention. These features include embedding the base assembly so that the end plate members 31 and 32 engage the ground to provide resistance to lateral forces, providing the buttress members which also resist the lateral pressure of the body of Water in the pool, and providing the reinforcing apron member 83 which relieves the side wall member 44 of at least a portion of the laterally applied pressure of the body of water, by virtue of the vertical section 84 being located in front of the wall member 44. As previously stated, the force of the weight of the body of water acting on the horizontal section 85 at least partially counteracts the lateral pressure applied by the body of water against the vertical section 84. It further will be appreciated that the angular position of each buttress member 40 relative to its associated cross beam member can be adjusted to compensate for either yielding ground conditions along the length of the base assembly or any bulging of the wall member 44 along the side wall section 22, caused by the concentration of excessive pressure at any particular point along the length thereof.

FIGURES 11 and 12 illustrate another embodiment of the invention. This embodiment is substantially similar to the embodiment illustrated in FIGURES 1 through 10, with the exception that a solid body of material 104 is used as a base means, in lieu of an assembly of cross beam members rigidly interconnected together. In this embodiment, the base member 104 consists of a body of material having a sufficient weight, such as concrete and the like, to anchor the side Wall section down. It is contemplated that the various mounting fixtures for the buttress members 40 be embedded or otherwise rigidly secured to the base member 104. In installations where concrete base members Would be used, the mounting fixtures simply could be set in position and the concrete poured into place so that the mounting fixtures would be embedded in the concrete after it has set.

The use of a heavy solid body of material results in the additional advantage of providing additional rigidity to the structure. In such installations, the lateral pressure applied by the body of water in the pool against the side wall section would be resisted by the weight of the base member, the engagement of the outer edge of the base member with the ground, the buttress members mounted on the base member and the reinforcing apron which also can be mounted on the inner side of the pool wall seated and secured on the portion of the base member extending to the inner side of the wall member of the pool.

From the foregoing detailed description it will be evident that there are a number of changes, adaptations and modifications of the present invention which come within the province of those skilled in the art. However, it is intended that all such variations not departing from the spirit of the invention be considered as within the scope thereof as limited solely by the appended claims.

What I claim is:

1. A pool structure comprising a peripheral wall having at least one substantially rectilinear Wall section, base means for supporting said rectilinear wall section extending to both sides of said wall section, a liner for holding a body of water disposed within said wall, said liner having an upper peripheral edge secured on said wall and said base means having sufiicient weight whereby the combined effect of the force of the entire Weight thereof and the force of the weight of the water in the pool acting on the portion of said base means disposed on the inner side of said wall section, is at least as great as the force applied by the weight of the water in the pool acting against said wall section.

2. A pool structure according to claim 1, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said wall section.

3. A pool structure according to claim 2, wherein said base means comprises a solid body of material having sufficient weight to anchor said wall section down.

4. A pool structure comprising a peripheral wall having at least one substantially rectilinear wall section, a liner for holding a body of water disposed within said Wall, said liner having a peripheral edge supported on said wall, base means for supporting said rectilinear wall section including a plurality of spaced cross beam members each extending to both sides of said wall section, at least one of said beam members having an upright member rigidly secured thereon for buttressing said wall section and said cross beam members being embedded in the ground whereby the outer ends thereof engage the ground to provide resistance to the pressure applied by the water in the liner against said wall section.

5. A pool structure according to claim 4, wherein said cross beam members are interconnected to form a rigid base means.

6. A pool structure according to claim 4, wherein the cross beam members each are provided with upper and lower surfaces having recesses on their outer ends, and including a member rigidly secured to and intreconnecting said cross beam members having flange portions received in the recesses in said upper and lower surfaces of said cross beam members.

7. A pool structure according to claim 1, wherein there is provided at least one upright member pivotally secured to said base means for pivotal movement in a plane intersecting said wall section and engageable therewith in buttressing relation and means for adjusting the angular position of said upright member relative to said base means.

8. A pool structure according to claim 7, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said side wall section.

9. A pool structure according to claim 7, wherein said base means comprises a solid body of material having sufficient weight to anchor said wall section down.

10. A pool structure comprising a peripheral wall having at least one substantially rectilinear Wall section, a liner for holding a body of water disposed within said wall, said liner having a peripheral edge supported on said wall, base means for supporting said rectilinear wall section including a plurality of spaced cross beam members each extending to both sides of said Wall section, at least one of said beam members having an upright member pivotally secured to said beam member for pivotal movement in a plane intersecting said wall section and engageable therewith in buttressing relation and means for adjusting the angular position of said upright member relative to said base means whereby said upright member may be adjusted to offset the lateral force provided by the water in said pool.

11. A pool structure according to claim 10, wherein the base means is embedded in the ground whereby the outer ends of said cross beam members engage the ground to provide additional resistance to the pressure applied by the water in the liner against said side wall section.

12. A pool structure according to claim 10, wherein the cross beam members are interconnected to form a rigid base means.

13. A pool structure according to claim 12, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said wall section.

14. A pool structure according to claim 10, wherein the cross beam members each are provided with upper and lower surfaces having recesses on their outer ends, and including a member rigidly secured to and interconnecting the outer ends of said cross beam members having flange portions received in the recesses in said upper and lower surfaces of said cross beam members.

15. A pool structure according to claim 14, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to pro vide additional resistance to the pressure applied by the water in the liner against said side wall section. [nut/urn! Magma bi fiqx ppgz b1fi 1A Arugula npqs dlimprr 16. A pool structure comprising a peripheral wall having at least one substantially rectilinear wall section, base means for supporting said rectilinear wall section extending to both sides of said wall section, a liner for holding a body of water disposed within said wall, said liner having an upper peripheral edge secured on said wall and rigid reinforcing means disposed within said wall including a first portion thereof rigidly mounted on the in- Wardly extending portion of said base means and a second portion thereof disposed adjacent the inner side of said rectilinear wall section whereby the force applied by the water in the pool against the second portion of said reinforcing means is counteracted by the combined effect of the force of the weight of the water applied on the first portion thereof mounted on said base means and the force of the entire weight of said base means.

17. A pool structure according to claim 16, wherein the rigid reinforcing means comprises an L-shaped member with said first portion being substantially horizontally disposed and said second portion being substan tially vertically disposed.

18. A pool structure according to claim 16, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said side wall section.

19. A pool structure according to claim 16, wherein said base means comprises a solid body of material having sufiicient weight to anchor said wall down.

20. A pool structure according to claim 16, wherein said base means comprises a plurality of spaced cross beam members each extending to both sides of said wall section and at least one of said beam members having an upright member rigidly secured thereon for buttressing said wall section.

21. A pool structure according to claim 20, wherein the base means is embedded in the ground wherein the outer ends of said cross beam members engage the ground to provide additional resistance to the pressure applied by the water in the liner against said side wall section.

22. A pool structure according to claim 20, wherein the cross beam members are interconnected to form a rigid base means.

23. A pool structure according to claim 22, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said wall section.

24. A pool structure according to claim 20, wherein the cross beam members each are provided with upper and lower surfaces having recesses adjacent their outer ends, and including a member rigidly secured to and interconnecting the outer ends of said cross beam members having flange portions received in the recesses in said upper and lower surfaces of said cross beam members.

25. A pool structure according to claim 24, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said side wall section.

26. A pool structure comprising a peripheral wall having at least one substantially rectilinear wall section, a liner for holding a body of Water disposed within said wall, said liner having a peripheral edge supported on said wall, base .means for supporting said rectilinear wall section extending to both sides of said wall section, at least one upright member pivotally secured to said base means for pivotal movement in a plane intersecting said wall section and engageable therewith in buttressing relation, means for adjusting the angular position of said upright member relative to said base means to offset the lateral force of the weight of the water within the pool applied to said wall section, and rigid reinforcing means disposed within said wall including a first portion thereof mounted on the inwardly extending portion of said base means and a second portion thereof disposed adjacent the inner side of said substantially rectilinear wall section whereby the pressure applied by the water in the pool against the second portion of said reinforcing means at least partially is counteracted by the force of the weight of the water applied on the first portion thereof mounted on said base means.

27. A pool structure according to claim 26, wherein the rigid reinforcing means comprises an L-shaped member with said first portion being substantially horizontally disposed and said second portion being substantially vertically disposed.

28. A pool structure according to claim 26, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said side wall section.

29. A pool structure according to claim 26, wherein said base means comprises a solid body of material having sufiicient weight to anchor said body down.

30. A pool structure according to claim 26, wherein said base means comprises a plurality of spaced cross beam members each extending to both sides of said wall section and said upright member being pivotally secured to one of said cross beam members.

31. A pool structure according to claim 30, wherein the base means is embedded in the ground whereby the outer ends of said cross beam members engage the ground to provide additional resistance to the pressure applied by the water in the liner against said sidewall section.

32. A pool structure according to claim 30, wherein the cross beam members are interconnected to form a rigid base means.

33. A pool structure according to claim 32, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said wall section.

34. A pool structure according to claim 30, wherein the cross beam members each are provided with upper and lower surfaces having recesses adjacent to their outer ends, including a member rigidly secured to and interconnecting the outer ends of said cross beam members having flange portions received in the recesses of said upper and lower surfaces of said cross beam members.

35. A pool structure according to claim 34, wherein said base means is embedded in the ground whereby the outer end of said base means engages the ground to provide additional resistance to the pressure applied by the water in the liner against said side Wall section.

References Cited UNITED STATES PATENTS 3,409,916 11/1968 Billig et a1. 4-172 1,521,554 12/ 1929 Guenther 527 3 1,786,613 12/1930 Hooper 4-172 2,595,633 5/1952 Black 52656 2,870,491 l/ 1959 Vincent 52169 3,192,538 7/1965 Walter 4172 3,225,362 12/1965 Barrera 4--172 3,233,251 2/1966 Barrera 4172 3,256,532 6/1966 Lindsey et al. 4-172 FOREIGN PATENTS 767,621 2/ 1957 Great Britain. 396,351 l/1966 Switzerland.

LAVERNE D. GEIGER, Primary Examiner H. K. ARTIS, Assistant Examiner U.S. Cl. X.R. 52169 

